by Natalie J. Dahl, M.S., CCC-SLP
There are several sounds in the English language that sound almost the same, but have
slight differences in how they are produced. Have you ever thought about how the /p/
sound is different from the /b/ sound? Both are made by pressing the lips together, both
are made by releasing air out of the mouth. The slight difference is called “voicing.”
The /p/ sound is voiceless (the voice is “turned off”) and /b/ is voiced (the voice is “turned
on” due to the vocal folds vibrating). There are several sound pairs like this that are very
similar except for voicing.
When children have difficulty using correct voicing, it can affect the meaning of what
they are trying to say. For example, what if a child told you “the big dog parked when
the peas chased after it!”? It doesn’t make sense, does it? What the child was trying to
say, but had incorrect voicing, was “the big dog barked when the bees chased after it!”
Voicing makes a big difference!
The following is a list of the voiceless and voiced consonant sounds, example words for
each sound to show the difference that voicing can make in a word, and tips for eliciting
Ask the child to put a hand on his/her throat, and then make an “ahhh” (or any
vowel) sound. Because all vowels are voiced, the child will be able to feel the
vibration by touching his/her throat.
Once the child can feel this vibration, you can use phrases to prompt correct
production of voiced consonants. Some examples of these could be: “make it
buzz,” “turn your voice on,” “use your voice power,” “make it a noisy sound,” or
any other phrase that the child can understand.
Have the child discriminate between voiced and voiceless sounds by pressing
his/her hand to your own throat. Start by saying “ahhh” so they can feel the
vibration. Next, make a voiceless sound (p, t, k, f, s, sh, ch, th) and ask them what
they felt. Alternate between voiced and voiceless sounds and have the child
If the child is still having difficulty turning his/her voice on
and off, kazoos are the perfect tool to use to teach this skill.
Have the child blow into the kazoo. It will only make the
buzzing sound when the child turns his/her voice on.
Voicing might seem like a small part of saying sounds correctly, but it can have a big
impact on how words are produced. It may take some time for a child to grasp the
concept of voiceless and voiced sounds, but once they do, they will be able to tell you all
about the big dog that barked when the bees chased after it!